2236 . If the sum of x and its multiplicative inverse is 3, then $x^{3} + 1 / x^{3} = ?$

A. $36$
B. $0$
C. $1$
D. $18$

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Answer: Option D

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অফিসার (জেনারেল) - 12.11.2021

A. 500
B. 400
C. 300
D. 200
E. 100

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Answer: Option D

Explanation:

If the total cost C = 1000 + 0.2s, where 's' is the sales volume, the variable cost on sales of TK. 1000 will be Taka

Given that,

sales of volume (s) = 1000

We know that,

Total cost (C) = total fixed cost + total variable cost

then, C = 1000 + 0.2s

Total variable cost = 0.2s

= 0.2 × 1000

= 200 Tk.

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Bangladesh Bank - Assistant Director - 2006

A. TK.6,250
B. TK.12,500
C. TK.15,000
D. TK.25,000
E. TK.48,000

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Answer: Option A

Explanation:

1500/12 months= 12500 per month
= sales in June= 125000/2
=6250

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2239 . If the total surface are of a hemisphere be 36. sq. cm, then its radius is

A. 3√2 cm
B. 3√3 cm
C. √3 cm
D. 2√3 cm

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Answer: Option A

Explanation:

The total surface area of a hemisphere is given by the formula:

Surface Area = 2πr^2

where "r" is the radius of the hemisphere.

Given that the total surface area is 36 sq. cm, we can set up the equation:

2πr^2 = 36

Now, solve for "r":

r^2 = 36 / (2π)

r^2 = 18 / π

r = √(18 / π)

To simplify further, we can rationalize the denominator by multiplying both the numerator and denominator by π:

r = √(18π / (π * π))

r = √(18π / π^2)

r = (3√2π) / π

So, the radius of the hemisphere is (3√2π) / π cm.

Now, to express it in a simplified form, we can cancel out π:

r = 3√2 cm

So, the radius of the hemisphere is 3√2 cm.

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সমন্বিত ৭ ব্যাংক || সিনিয়র অফিসার-05-11-2021 ||

A. W, X and Y, X,Y and Z
B. U,V and W, X,Y and Z
C. U,W and Y, V,X and Z
D. V,W and X, V,W and Y

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Answer: Option A

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2241 . If the two digit integers M and N are positive and have the same digits, but in reverse order, which of the following CANNOT be the sum of M and N?

A. 181
B. 165
C. 121
D. 99
E. None of these

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Answer: Option A

Explanation:

Let the first digit be xy, then the second digit would be yx.

xy = 10x + y
yx = 10y + x

sum = 11 (x+y)

so the sum has to be multiple of 11. 181 is not. so 181 be the answer

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2242 . If the universal set consists of two sets A and B, then the complementary set of A is-

A. $A \cap B$
B. $A$
C. $B$
D. $A \cup B$

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Answer: Option C

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সমন্বিত ৮টি ব্যাংক ও ১টি আর্থিক প্রতিষ্ঠান - সিনিয়র অফিসার (16-05-2025)

A. 9 square metre
B. 18 square metre
C. 54 square metre
D. None of them

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Answer: Option C

Explanation:

V= a³

A = 6a²

27 =a³ or a=3
A = 6 × a2 = 54

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সমন্বিত ৪ ব্যাংক - সহকারী প্রোগ্রামার - 25.09.2020

A. 4%
B. 8%
C. 12%
D. 16%

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Answer: Option D

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2245 . If the value of ZYZ company stock drops from Tk. 25 per share to Tk. 21 per share , what is the percent of the decrease?

A. 4%
B. 8%
C. 12%
D. 1%
E. None of these

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Answer: Option E

Explanation:

the value of XYZ Company stock drops from tk. 25 per share to tk. 21 per share = 25 - 21 = 4 tk

The percentage decrease = Change*100/base year value
= 4*100/25
= 16% (ans)

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Jamuna Bank Ltd - Probationary Officer - 2009

A. 9 square meters
B. 18 square meters
C. 54 square meters
D. 3 square meters

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Answer: Option C

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2247 . If the word EXAMINATION is written as 8912316354, what word does 456354 stand for?

A. NATION
B. RATION
C. NOTION
D. STATION

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Answer: Option C

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2248 . If there are 300 calories in 100 grams of a certain food, how many calories are there in a 30 gram portion of that food?

A. 90
B. 100
C. 900
D. 1000

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Answer: Option A

Explanation:

100 grams have 300 calories

So, 30 grams have (300×30)/100=90 grams

(ans)

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2249 . If there are 300 calories in 100 grams of a food, how many calories are there in a 30-gram portion of that food?

A. 90
B. 100
C. 900
D. 1000
E. None of these

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Answer: Option A

Explanation:

Calories remained in the 30gram portion = 30 / 100 x 300 = 90 calories

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2250 . If Tk. 45,000 was invested in a share when the price per share was Tk. 90 and Tk. 30,000 was invested when the price per share was Tk. 60, what was the average price per share purchased?

A. Tk. 80
B. Tk. 75
C. Tk. 77.5
D. None of these

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Answer: Option B

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2237 . If the total cost C= 1000 + 0.2s, where 's' is the sales volume, the variable cost on sales of TK. 1000 will be Taka

2238 . If the total sales for a business in a certain year were TK.150,000, what were the sales in June, If June sales were half the monthly average?

2239 . If the total surface are of a hemisphere be 36. sq. cm, then its radius is

2240 . If the two commissions have parallel terms of office, which of the following could be selected as the members of the Public service commission and the members of the Rent Control Commission , respectively , for one such term of office?

2241 . If the two digit integers M and N are positive and have the same digits, but in reverse order, which of the following CANNOT be the sum of M and N?

2243 . If the value of a cube is 27 cubic meters, find the the surface area of the cube?

2244 . If the value of XYZ company stock drops from Tk.25 per share to Tk.21 per share, what is the percent of the decrese?

2245 . If the value of ZYZ company stock drops from Tk. 25 per share to Tk. 21 per share , what is the percent of the decrease?

2246 . If the voluem of a cube is 27 cubic meters, find the surface area of the cube?

2247 . If the word EXAMINATION is written as 8912316354, what word does 456354 stand for?

2248 . If there are 300 calories in 100 grams of a certain food, how many calories are there in a 30 gram portion of that food?

2249 . If there are 300 calories in 100 grams of a food, how many calories are there in a 30-gram portion of that food?

2250 . If Tk. 45,000 was invested in a share when the price per share was Tk. 90 and Tk. 30,000 was invested when the price per share was Tk. 60, what was the average price per share purchased?

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